US835275A - Blackboard-eraser. - Google Patents

Blackboard-eraser. Download PDF

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Publication number
US835275A
US835275A US31434606A US1906314346A US835275A US 835275 A US835275 A US 835275A US 31434606 A US31434606 A US 31434606A US 1906314346 A US1906314346 A US 1906314346A US 835275 A US835275 A US 835275A
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United States
Prior art keywords
strips
eraser
blackboard
upper edges
glued
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US31434606A
Inventor
Frederick E Cardy
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Individual
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Individual
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Publication date
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Priority to US31434606A priority Critical patent/US835275A/en
Application granted granted Critical
Publication of US835275A publication Critical patent/US835275A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A47L13/24—Frames for mops; Mop heads

Definitions

  • My invention relates to noiseless blackboard-erasers, and especially to a construction thereof involving a flat top and a series of strips arranged side by side and secured with their edges against the lower face of said top.
  • the principal object of my invention is to provide a simple, practical, durable, and inexpensive construction of blackboard-eraser of this kind.
  • Figure 1 is a perspective view of an eraser embodying my present invention.
  • Fig. 2 is a plan view of the same with the top removed.
  • Fig. 3 is a section taken on line 3 3 in Fig. 2.
  • the eraser shown comprises a flat top 1, made of felt or like material, and a plurality of strips 2 2 2 of the same material, arranged side by side with their upper edges extended across the lower face of the top 1.
  • a layer of cardboard 3 is interposed between the top 1 and strips 2 2.
  • the strips 2 2 are secured to the top 1 by straps or hands 4 4, preferably tape or like material, which are passed through the strips 2 2 near their upper edges, as shown in Fig. 2.
  • the top 1 is glued to the cardboard piece 3, and the latter is glued to the upper edges of the strips 2 2, so that the whole forms a firm, compact, and tightly-secured structure.
  • a blackboard-eraser comprising a top, a series of strips arranged side by side with their upper edges below said top, and binding material extended through said strips near their upper edges and having its ends glued to the top.
  • a blackboard-eraser comprisingatop, a series of strips arranged side by side with their upper edges below the top, and binding material extended through said strips and secured in position between the top and the upper edges of said strips.
  • Ablackboard-eraser comprising a top, a series of strips arranged side by side below said top, a layer of stiffening material interposed between the top and said strips, and
  • binding material passed through the strips and then between the top and the upper edges of said strips and glued in such interposed position.
  • a blackboard-eraser comprising a top, a series of strips arranged side by side with their upper edges below said top, a piece of cardboard interposed between the top and said strips, and sections of tape extended through said strips and then passed between the same and the top and glued to the cardboard, the top and the strips being also glued to the cardboard.

Description

PATENTED NOV. 6, 1906. P. E. GARDY.
BLACKBOARD ERASER.
APPLIOATION FILED APB..30,1906.
rm: NCQRIS Plrrslu co-, wasnmwun. n. c.
FREDERICK E. CARDY, OF CHICAGO. ILLINOIS.
BLACKBOARD-ERASER.
Specification of Letters Patent.
Patented Nov. 6, 1906.
Application filed April 30, 1906. Serial No. 314,346-
To all whom it may concern.-
Be it known that I, FREDERICK E. CARDY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Blackboard-Erasers, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.
My invention relates to noiseless blackboard-erasers, and especially to a construction thereof involving a flat top and a series of strips arranged side by side and secured with their edges against the lower face of said top.
The principal object of my invention is to provide a simple, practical, durable, and inexpensive construction of blackboard-eraser of this kind.
In the accompanying drawings, Figure 1 is a perspective view of an eraser embodying my present invention. Fig. 2 is a plan view of the same with the top removed. Fig. 3 is a section taken on line 3 3 in Fig. 2.
The eraser shown comprises a flat top 1, made of felt or like material, and a plurality of strips 2 2 2 of the same material, arranged side by side with their upper edges extended across the lower face of the top 1. A layer of cardboard 3 is interposed between the top 1 and strips 2 2. The strips 2 2 are secured to the top 1 by straps or hands 4 4, preferably tape or like material, which are passed through the strips 2 2 near their upper edges, as shown in Fig. 2. The top 1 is glued to the cardboard piece 3, and the latter is glued to the upper edges of the strips 2 2, so that the whole forms a firm, compact, and tightly-secured structure.
It will be understood that changes and modifications can be made Without departing from the spirit of the invention.
What I claim is 1. A blackboard-eraser comprising a top, a series of strips arranged side by side with their upper edges below said top, and binding material extended through said strips near their upper edges and having its ends glued to the top.
2. A blackboard-eraser, comprisingatop, a series of strips arranged side by side with their upper edges below the top, and binding material extended through said strips and secured in position between the top and the upper edges of said strips.
3. Ablackboard-eraser, comprising a top, a series of strips arranged side by side below said top, a layer of stiffening material interposed between the top and said strips, and
binding material passed through the strips and then between the top and the upper edges of said strips and glued in such interposed position.
4. A blackboard-eraser, comprising a top, a series of strips arranged side by side with their upper edges below said top, a piece of cardboard interposed between the top and said strips, and sections of tape extended through said strips and then passed between the same and the top and glued to the cardboard, the top and the strips being also glued to the cardboard.
In witness whereof I hereunto subscribe my name this 5th day of December, A. D.
FRED. E. CARDY. Witnesses:
A. M. BELFIELD, I. C. LEE.
US31434606A 1906-04-30 1906-04-30 Blackboard-eraser. Expired - Lifetime US835275A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US31434606A US835275A (en) 1906-04-30 1906-04-30 Blackboard-eraser.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31434606A US835275A (en) 1906-04-30 1906-04-30 Blackboard-eraser.

Publications (1)

Publication Number Publication Date
US835275A true US835275A (en) 1906-11-06

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ID=2903750

Family Applications (1)

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US31434606A Expired - Lifetime US835275A (en) 1906-04-30 1906-04-30 Blackboard-eraser.

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